* Re: Can someone confirm ext4 BUG_ON on latest kernel build? [not found] <4DFDCBE0.5020806@halfdog.net> @ 2011-06-19 15:07 ` Randy Dunlap 2011-06-20 1:42 ` Ted Ts'o 1 sibling, 0 replies; 2+ messages in thread From: Randy Dunlap @ 2011-06-19 15:07 UTC (permalink / raw) To: halfdog, linux-ext4; +Cc: linux-kernel@vger.kernel.org [adding ext4 mailing list] On Sun, 19 Jun 2011 10:13:52 +0000 halfdog wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Sorry, I do not have latest kernel. Can someone confirm this on latest? > At least bugtracker does not know about it, and to my understanding of > source, should be still here. > > > dd if=/dev/zero bs=1M count=64 of=test > mkfs.ext4 -F test > echo -n " " | dd of=test bs=1 count=1 seek=297195 conv=notrunc > mount -o loop test /mnt/test > dmesg -c > > On ubuntu natty with latest kernel, it seems, that > fs/ext4/super.c:__save_error_info calls mod_timer before timer->function > is set at end of fs/ext4/super.c:ext4_fill_super via > sbi->s_err_report.function = print_daily_error_info; > > This causes BUG_ON(!timer->function) in kernel/timer.c:__mod_timer > Device is stuck, not usable any more. > > Thanks > > - -- > http://www.halfdog.net/ > PGP: 156A AE98 B91F 0114 FE88 2BD8 C459 9386 feed a bee > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.6 (GNU/Linux) > > iD8DBQFN/cvFxFmThv7tq+4RAgfvAJ97N9bnKq4kN99XneTMyJZ5Hha9MQCfcguN > L4trkTeOsIqDWF8m6VUqcgc= > =zvYY > -----END PGP SIGNATURE----- > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ --- ~Randy *** Remember to use Documentation/SubmitChecklist when testing your code *** ^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Can someone confirm ext4 BUG_ON on latest kernel build? [not found] <4DFDCBE0.5020806@halfdog.net> 2011-06-19 15:07 ` Can someone confirm ext4 BUG_ON on latest kernel build? Randy Dunlap @ 2011-06-20 1:42 ` Ted Ts'o 1 sibling, 0 replies; 2+ messages in thread From: Ted Ts'o @ 2011-06-20 1:42 UTC (permalink / raw) To: halfdog; +Cc: linux-kernel@vger.kernel.org, linux-ext4 On Sun, Jun 19, 2011 at 10:13:52AM +0000, halfdog wrote: > > Sorry, I do not have latest kernel. Can someone confirm this on latest? > At least bugtracker does not know about it, and to my understanding of > source, should be still here. > > dd if=/dev/zero bs=1M count=64 of=test > mkfs.ext4 -F test > echo -n " " | dd of=test bs=1 count=1 seek=297195 conv=notrunc > mount -o loop test /mnt/test > dmesg -c > > On ubuntu natty with latest kernel, it seems, that > fs/ext4/super.c:__save_error_info calls mod_timer before timer->function > is set at end of fs/ext4/super.c:ext4_fill_super via > sbi->s_err_report.function = print_daily_error_info; > > This causes BUG_ON(!timer->function) in kernel/timer.c:__mod_timer > Device is stuck, not usable any more. This problem is fixed in 2.6.39 (via commit 0449641130f5, which landed in mainline in 2.6.39-rc3). Regards, - Ted ^ permalink raw reply [flat|nested] 2+ messages in thread
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2011-06-19 15:07 ` Can someone confirm ext4 BUG_ON on latest kernel build? Randy Dunlap
2011-06-20 1:42 ` Ted Ts'o
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